build: Add categories to Cargo.toml, badges to README

Cargo.toml

@@ -3,12 +3,12 @@ name = "dht-sensor"
 version = "0.1.0"
 description = "Driver for the DHT11/DHT22 sensor based on embedded-hal"
 authors = ["Michael Beaumont <[email protected]>"]
-keywords = ["embedded", "sensor", "humidity", "temperature", "embedded-hal-driver", "dht11", "dht22"]
+keywords = ["embedded", "sensor", "humidity", "temperature", "embedded-hal-driver"]
+categories = ["embedded", "no-std", "hardware-support"]
 edition = "2018"
 readme = "README.md"
 license = "MIT"
 repository = "https://github.com/michaelbeaumont/dht-sensor"
-homepage = "https://github.com/michaelbeaumont/dht-sensor"
 
 [dependencies]
 embedded-hal = "0.2.3"

README.md

@@ -1,5 +1,8 @@
 # DHT11/DHT22 sensor driver
 
+[![crates.io](https://img.shields.io/crates/v/dht-sensor)](https://crates.io/crates/dht-sensor)
+[![Docs](https://docs.rs/dht-sensor/badge.svg)](https://docs.rs/dht-sensor)
+
 This library provides a platform-agnostic driver for the [DHT11 and DHT22](https://learn.adafruit.com/dht/overview) sensors.
 
 Use one of two functions `dht11::Reading::read` and `dht22::Reading::read` to get a reading.